05-17-2010 10:42 AM - edited 03-11-2019 10:46 AM
Hi All,
we have ASA 5510. it's conencted to internet and MPLS cloud by outside and inside interface respectively. we'd like to setup EIGRP routing protocol on ASA, if internet link is being down, default route will be changed to MPLS cloud. we added delay on MPLS router interface, so it is used as backup and populate (0.0.0.0) network from both internet and MPLS routers to ASA.
is there any documentation for setting up preferred route by EIGRP on ASA? there is document for IOS router, but ASA looks different.
thanks
Alex
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05-17-2010 12:33 PM
Honestly, if you have just one exit point for failover, it would be easier to set one static route like my original answer.
Assuming that the Internet router goes down, your default route from your ASA now points to your internet router (I'm assuming without seeing your routing table). If that router goes down, now your default route no longer responds. You'll need to set another default route on your ASA to be used in case your other router doesn't respond:
Internet router: 1.1.1.1
MPLS router: 2.2.2.2
Route statements on ASA:
route outside 0.0.0.0 0.0.0.0 1.1.1.1
route inside 0.0.0.0 0.0.0.0 2.2.2.2 254
In THEORY, this should work, so I wouldn't do it until after hours to test it. When the 1.1.1.x route no longer responds, it will automatically roll over to the floating route and start sending all traffic that's not known to it to your MPLS side.
HTH,
John
05-17-2010 11:52 AM
If you're wanting EIGRP routes to be preferred over the static, then you'll need to add your static route with a higher AD (something like 250):
route outside 0.0.0.0 0.0.0.0 1.1.1.1 250
Your EIGRP routes will have an AD of 90, so they'll be preferred as long as the neighbor is up and doesn't withdraw its routes. I hope I'm understanding what you want.
HTH,
John
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05-17-2010 12:02 PM
thanks for your reply,
so on the router that running EIGRP, we have to add (netwrok 0.0.0.0 255.255.255.255) command to populate to ASA? and how does ASA know route traffic from inside or outside when gets routing table from the router running EIGRP?
thanks
Alex
05-17-2010 12:12 PM
I'm sorry Alex. I don't think I understood your question. Are you wanting to share your EIGRP table from your router to the ASA, or are you wanting to supply a default route to the ASA from the router?
Does this look like your topology:
Router
|
ASA
|
LAN
If you only have the one device between the ASA and the router, it would be easier to just create a static default route on the ASA pointing to your router. Then you'd only have to worry about managing the EIGRP routes on the router and not two devices. Does your ASA have multiple paths out of the network?
HTH,
John
05-17-2010 12:24 PM
sorry for my unclear question. here is the topology:
MPLS router -- inside ASA -- outside ASA -- internet router
if internet router is down, we want ASA to route all traffic from inside to the MPLS router. service provider running EIGRP on both MPLS and internet router.
thanks
Alex
05-17-2010 12:33 PM
Honestly, if you have just one exit point for failover, it would be easier to set one static route like my original answer.
Assuming that the Internet router goes down, your default route from your ASA now points to your internet router (I'm assuming without seeing your routing table). If that router goes down, now your default route no longer responds. You'll need to set another default route on your ASA to be used in case your other router doesn't respond:
Internet router: 1.1.1.1
MPLS router: 2.2.2.2
Route statements on ASA:
route outside 0.0.0.0 0.0.0.0 1.1.1.1
route inside 0.0.0.0 0.0.0.0 2.2.2.2 254
In THEORY, this should work, so I wouldn't do it until after hours to test it. When the 1.1.1.x route no longer responds, it will automatically roll over to the floating route and start sending all traffic that's not known to it to your MPLS side.
HTH,
John
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